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Simultaneous Reduction in Time and Space for Dynamic Finite Element Models of Beam-Column Assemblies

机译:用于动态有限元模型的时间和空间同时减少光束柱组件

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摘要

For analyzing structural dynamic behaviors, a broadly accepted approach is to semi-discretize the mathematical models by finite elements and solve the resulting ordinary initial value problems in time. For some structural behaviors, e.g., seismic behavior of large underground structures, the lumped mass and the dynamic excitation are available as digitized records. When one or both of these digitizations are very dense, the analysis computational effort may become excessive. To reduce this effort, attention is paid to a technique proposed for efficient time history analysis (in 2008 by the first author), and recently adapted to static finite element analysis. In this paper, the technique and its adapted version are put together with the purpose to reduce in time and space finite element models representing seismic behaviors of beam-columns assemblies. Provided special conditions, the analysis computational effort reduces considerably in the price of negligible change in accuracy.
机译:为了分析结构动态行为,广泛接受的方法是通过有限元分离数学模型,并及时解决导致的普通初始值问题。 对于一些结构行为,例如,大地下结构的地震行为,集体质量和动态励磁可用作数字化记录。 当这些数字化中的一个或两个非常密集时,分析计算工作可能会过度。 为了减少这项努力,需要注意的是用于有效时间历史分析的技术(第一个作者2008年),最近适应静态有限元分析。 在本文中,该技术及其调整版本与表示梁柱组件的地震行为的时间和空间有限元模型进行了组合。 提供了特殊条件,分析计算工作的准确性变化的价格显着降低。

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